1 files changed, 10 insertions, 9 deletions

diff --git a/src/libutil/archive.cc b/src/libutil/archive.cc
index db544a212..6a8484705 100644
--- a/src/libutil/archive.cc
+++ b/src/libutil/archive.cc
@@ -46,7 +46,7 @@ static void dumpContents(const Path & path, size_t size,
     sink << "contents" << size;
 
     AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
-    if (!fd) throw SysError(format("opening file '%1%'") % path);
+    if (!fd) throw SysError("opening file '%1%'", path);
 
     std::vector<unsigned char> buf(65536);
     size_t left = size;
@@ -68,7 +68,7 @@ static void dump(const Path & path, Sink & sink, PathFilter & filter)
 
     struct stat st;
     if (lstat(path.c_str(), &st))
-        throw SysError(format("getting attributes of path '%1%'") % path);
+        throw SysError("getting attributes of path '%1%'", path);
 
     sink << "(";
 
@@ -94,8 +94,9 @@ static void dump(const Path & path, Sink & sink, PathFilter & filter)
                     name.erase(pos);
                 }
                 if (unhacked.find(name) != unhacked.end())
-                    throw Error(format("file name collision in between '%1%' and '%2%'")
-                        % (path + "/" + unhacked[name]) % (path + "/" + i.name));
+                    throw Error("file name collision in between '%1%' and '%2%'",
+                       (path + "/" + unhacked[name]),
+                       (path + "/" + i.name));
                 unhacked[name] = i.name;
             } else
                 unhacked[i.name] = i.name;
@@ -111,7 +112,7 @@ static void dump(const Path & path, Sink & sink, PathFilter & filter)
     else if (S_ISLNK(st.st_mode))
         sink << "type" << "symlink" << "target" << readLink(path);
 
-    else throw Error(format("file '%1%' has an unsupported type") % path);
+    else throw Error("file '%1%' has an unsupported type", path);
 
     sink << ")";
 }
@@ -247,7 +248,7 @@ static void parse(ParseSink & sink, Source & source, const Path & path)
                 } else if (s == "name") {
                     name = readString(source);
                     if (name.empty() || name == "." || name == ".." || name.find('/') != string::npos || name.find((char) 0) != string::npos)
-                        throw Error(format("NAR contains invalid file name '%1%'") % name);
+                        throw Error("NAR contains invalid file name '%1%'", name);
                     if (name <= prevName)
                         throw Error("NAR directory is not sorted");
                     prevName = name;
@@ -303,14 +304,14 @@ struct RestoreSink : ParseSink
     {
         Path p = dstPath + path;
         if (mkdir(p.c_str(), 0777) == -1)
-            throw SysError(format("creating directory '%1%'") % p);
+            throw SysError("creating directory '%1%'", p);
     };
 
     void createRegularFile(const Path & path)
     {
         Path p = dstPath + path;
         fd = open(p.c_str(), O_CREAT | O_EXCL | O_WRONLY | O_CLOEXEC, 0666);
-        if (!fd) throw SysError(format("creating file '%1%'") % p);
+        if (!fd) throw SysError("creating file '%1%'", p);
     }
 
     void isExecutable()
@@ -332,7 +333,7 @@ struct RestoreSink : ParseSink
                OpenSolaris).  Since preallocation is just an
                optimisation, ignore it. */
             if (errno && errno != EINVAL && errno != EOPNOTSUPP && errno != ENOSYS)
-                throw SysError(format("preallocating file of %1% bytes") % len);
+                throw SysError("preallocating file of %1% bytes", len);
         }
 #endif
     }